Galvanizing-furnace.



l -c. FELL.-

vGAvLvMnznm FuRNAlcE. APPLlcATgoN man Nov. l2. 1914. v "f y Patented Oct.. 12,1915. M 2v SHEETS-SHEET l.

c.l im. i GALVANIZING FURNAQE. APPLICATION FILED NOV. 12, |914 1,156,353. 'Patented 061;. 1,2, 1915.l

2 SHEETS-SHiET 2.

v u l, WITNESSES iiNrrEn srnms rar-ENT oEErcE.

cErAELEs EELL, ci;1 ELY 11A, .oHIo, .assIGrNon To NATIONAL TUBE CoMPANY, or

PITTSBURGH, PE NsYLVANIA, A coEPoRATIoN'oE NEW JERSEY.

GALVANI'ZING-EURNAGE.

Haasse.

rammed oet. 12,1915. I

' Application led November I2, 1914. Serial No.' 871,741.y

vZen of the United States, andresident of- Elyria, in the county of Lorain and State of c Ohio, have invented certain new and useful Improvements in Galvanizing-Furnaces, of1

' which the following is aspecilicati'on.

My. invention relates 'to the construction of galvanizing Ifurnaces, and while notre'- 10 stricted tosuch use, more particularly relates to the .construction of the galvanizing pipes. Such galvanizingpots are`cast or are built up of wrought metal plates.- It 15, has been found that the-life of such pots, which are ycast or 'are built up* of wrought metal pla-tes, isy very much shortened by the,`

action of the intense.l heat atA the junctionof 20 the sides and'v ends with. the bottom of the wrought metal construction.

One object of my invention'isto provide a furnacegalvanizing-pothaving novel means whereby cracking or breaking 'of the pots adjacent 'to' the corners formed at the interse tions of the side walls withithe bottomY and-end walls, lisovercome and prevented.

Still-further objects of my invention will.

become apparent hereinafter as the', invengtion becomes more fully described and specically pointed out in the appended claims.

Referring now to the drawings forming a part of this specification, Figure 1 is a sectional plan showiitg a galvanizing furnace -having'a galvaniz'mg pot constructed and arranged in accordance `with my inyention,

similar sectional elevation showing the loca,

tion of the cooling means at the corner formed by theend and bottom ofthegalvanizing pot. V 1

In 'the accompanying drawings, the numeral 2 designates a 'galvanizing pot having a. bottom 3,. ends 4, 4 and sides 5,' 5 formed e5 of relied man pines. The pnt@ forming pot, both in the cast form and the built u plv ing the location ofthe cooling means rela- 1 the bottom 3 of the 'pot is-bent at its ends to vform integral ends 4, 4 for the pot, and the side edges of the plate forming the bottom 3 and ends 4, 4 are provided with flanges 6 by .whichthe side plates-"5, 5 are riveted to the 60 bottom and end members of the galvanizing pot (see Figs.- l, 5 and 6)., A rolled metal angle 7 is riveted by one'leg to the upper marginal `edges of the sides and endsof the' pot, as will be seen by reference to Figs. 5 65 and 6. pot of; furnaces used in galvanizi-ng metal The galvanizing pot orlet'tle' 2 is.su r

rounded by the refractory walls of the furfines 1:2"which open at their upper ends 80 throughl ports 13 intol 'the combustion chambers 14, a plurality of which are provided at each -side of the galvanizing pdt. The draft flues 8, 9, and 10 also are connected to thefflowerends of vertical iuesl which 85 open at their upper ends through ports 16. into the combustion chambers 17 at the ends of the pot 2.

As'will be seen by reference to Figs. 2 and 8 theside plates' and end plates 4 of the 90 p'ot 2 forml one wall of the vertical nues so that the heated gases will come in direct contact with` the metalplates forming the pon The upper side of'the draft flue 9' also has an opening 9b therein to permit the heat- 95 ed gases or products of co'mbustion contacting directly with' the kbottom plate 3 ofthe pot'2. (See Fig. 3.)

Extending lengthwise and parallel with .the length. of the furnace, below the com 100 `b'ustipn chambers 14 and above the horizontal draft flues 8 and 10 are gas lues 18 and .119, ports 20 connecting the nues 18, 19 with the combustion chambers 14`and '17 and aV movable tile 21 being employed to regulate` 105 the'size ofthe ports 20fandl control the now of vgas into the combustion chambers. An air port 22 connects intoeach combustionA chamber at the bottom'thereof to admit theA airnecessary to support combustion in the 119 combustion chambers and the tiles 2l are conveniently adjusted through the air portsl 22 in regulating the amount of gas passing into each combustion chamber. A transverse flue 23 connects the gas flues 18 and 19 with the gas ports 24 opening through the bottom thereof into the combustion chambers 17 at .the ends of the galvanizing pot.

sides and ends of the furnaces.

Extending lengthwise from one end to the other of the galvanizmg pot on each side 'of the riveted joint formed at the junction of the plate forming the bottom 3 and ends` 4 w'th each plate' 5 forming the vertical side wal4 of the pot 2, is a water pipe 30, these pipes being bent at thelends of the pot to extend vertically upwardlyin close, proximity tothe joint formed by the side plates with the end of the galvanizing pot and extend/ing upwardly through the brick work i of the furnace to a point where they are connected to a suitable source of supply and to an overflow outlet opening. In constructing the furnace the ricated in the usual manner andthe refrace toryv furnace is constructed to a suitable height to place the galvanizing pot 2 in position. Thebent pipes 30 are then positioned in the walls of the galvanized furnace and the galvanizingpot is also positioned as shown in the furnace. The refractory lining Pot.'

or brick work is then completed :and after thebuckstaves have been placed in position the furnace is ready for use. The furnace is then `employed in the usual manner, being first filled with spelter which becomes molten by the action of the heated gases, which in passingfrom the combustion chambers come.

into contact with the Walls. of the galvaniz- When the furnace-iis started in .operation Water or other cooling medium is caused to circulate through the cooling pipes so that pot is fabthe joints in the plates of built up. pots such as those shown in the drawings are kept rela# tively cool, and over-heating of the pot at the jointsv is thereby prevented so' that liability of cracking 'or breakage .is greatly reduced and the life of the pots very materially increased. l

Instead of employing galvanizing pots built upv of wrought metal plates7 with pipes to conduct the cooling medium as shown, the

pots may be cast with conduits formed therein to carry 'the cooling medium, or the pipes may be cast in the body of the cast metal galvanizing pots'.

The advantages of my invention will be apparent to those skilled in the art. By the provision of a pipe or similar conduit to conduct a cooling medium to points adjacent to the yjunction of the side and end walls with the bottom of the pot, the life ofthe pots is greatly increased and the'cost of maintaining the galvanizing furnaces in operative condition is materially reduced.

p 'Modifications in the construction and arrangement ofthe furnace and in the galvanizing pot may be made without departing from my inventionl as defined in the append-v ed claims. v

I claim: l 1.` In a galvanizing furnaceja galvanizing pot, means for heating the pot, and aconduit adjacent to the intersection of the side walls with the bottomof the pot to conduct va cooling medium therethrough and prevent over-heating the 'pot at the junction of the sides and bottom thereof.

2. A galvaniZing-- furnace comprising 'a built up galva-nizing vpot formed of metal plates riveted together yat the rintersection of the side walls withthe bottom and end walls, and pipes adjacent to the riveted joints in said pot arranged to convey a cool- -mg medlum therethrough and thereby preI vent'over-heatin'g ,of the jointsof said -pot'- In testimonywhereof, I have hereunto set my hand.

Vitnesses: j DAVID I-I. PINKNEY, ARTHUR R.l GRABER.

CHARLES FELL. 

